When my oncologist suggested I start taking Adcal D3 a few months ago to help strengthen my bones I stopped taking my daily vitamin D supplement and added the new supplement to my daily regimen. Then just recently when I was having my flu jab at my local pharmacy I happened to mention food interactions with the pharmacist. He said grapefruit was fine to continue eating, but there was a question mark over soya.
I then spoke to two hospital pharmacists who said that as I am ER+ it is best to avoid soya, as it could potentially fuel the growth of the tumour. My oncologist, GP, and others never told me that! Not long after that I found out that the chewable Adcal D3 contains soya, unless you take it in caplet form. Fortunately, when I spoke to a triage nurse at my doctor's surgery she put a new prescription through for me right then and there. The dosage is two caplets twice a day at 750mg.
I am not convinced that soya plays a role in ER+ breast cancer, but I have cut it out over the past week or so just in case. It was harder to cut it out than I thought it would be. It is added to chocolate, most varieties of bread in the form of soya flour, some condiments such as mayonnaise, cakes, some biscuits and so much more. I will be mentioning this to my oncologist when I see her next month to find out what she has to say.
But I just wanted to mention this to others who may also be taking Adcal D3 who either have an intolerance or allergy to soya, or are ER+ and may wish to change over to the caplet form of the drug.